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Last Updated: Apr 11, 2008 - 9:27:34 AM |
Latest Research
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Radiology
Indian American develops tool to image tumours
New York, April 1 - A team of researchers led by Indian American Sanjiv Gambhir has developed a new type of imaging system capable of picturing tumours to a precision of a trillionth of a meter.
Apr 11, 2008 - 10:30:58 AM
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Latest Research
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Radiology
Injectable Microfoam for Varicose Veins safe in Phase II trial
A small group of patients with a common heart defect who were treated for varicose veins with an injectable microfoam experienced no neurological, visual or cardiac changes as a result of the treatment, according to preliminary results from a phase II trial. The results are being presented today (March 17) in Washington, D.C., at the annual scientific meeting of the Society of Interventional Radiology (SIR).
Mar 17, 2008 - 4:46:42 AM
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Latest Research
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Radiology
Newer Nonionic Contrast Agents Safe for Children
Allergic-like reactions to newer iodine-containing contrast agents (nonionic contrast media), are rare in children according to a recent study conducted by researchers from the University of Michigan Medical Center and C.S. Mott Childrenâs Hospital both in Ann Arbor.
Jun 7, 2007 - 9:35:07 PM
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Latest Research
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Radiology
Electromagnetic breast imaging techniques offer high contrast and ability to distinguish between healthy breast tissue and abnormal tissue
Dartmouth physicians and engineers have published a paper with results from a five-year project testing three new imaging techniques to examine breast abnormalities, including cancer. The study finds that the new methods of electromagnetic imaging offer a high contrast and the ability to distinguish between healthy breast tissue and abnormal tissue. Their study appears in the May 2007 issue of Radiology, the journal of the Radiological Society of North America.
Jun 6, 2007 - 4:02:00 PM
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Latest Research
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Cancer
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Liver Cancer
Percutaneous radiofrequency ablation of liver tumors prove safe and effective
Percutaneous imaging guided radiofrequency ablation (RFA) of hepatocellular carcinoma is a safe and effective technique, with benefits such as reduced post-procedural pain and length of hospital stay, according to a study conducted by researchers from Changi General Hospital in Singapore.
May 5, 2007 - 2:14:26 AM
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Latest Research
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Surgery
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Transplantation
CT and MRI accurate for pre-transplant evaluation of patients with cirrhosis
CT and MRI are highly accurate at determining which patients would be optimal candidates for liver transplantation, says a recent study.
May 5, 2007 - 12:29:02 AM
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Latest Research
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Radiology
Stem cells used to regenerate healthy human liver tissue
For the first time, researchers have used adult bone marrow stem cells to regenerate healthy human liver tissue, according to a study published in the April issue of the journal Radiology.
Mar 27, 2007 - 1:12:54 AM
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Latest Research
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Radiology
Lung cancer screening regimen provides opportunity for cure
Annual computed tomography (CT) screening identifies a high proportion of patients with early-stage lung cancer, according to the latest findings of the New York Early Lung Cancer Action Project (NY-ELCAP) published in the April issue of the journal Radiology.
Mar 27, 2007 - 1:10:05 AM
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Latest Research
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Radiology
RF ablation effective for treating inoperable lung cancer
A minimally invasive procedure known as radiofrequency (RF) ablation is effective for treating lung cancer in patients who are not candidates for surgery, according to a Rhode Island Hospital study published in the April issue of the journal Radiology.
Mar 27, 2007 - 1:02:46 AM
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Latest Research
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Radiology
Ultrasound could help couples undergoing IVF
Ultrasound-based tests allowing women undergoing in-vitro fertilization (IVF) to count their chickens before they've hatched may provide alternatives to the hormone-based tests used today. Less costly and invasive than the current ovarian reserve tests, clinicians may in future consider using ultrasound scans of a woman's ovaries to predict her ovaries' response to IVF.
Mar 15, 2007 - 6:04:55 AM
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Latest Research
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Radiology
Patients prefer CT to MRI to evaluate coronary arteries
Computed tomography (CT) is preferred to magnetic resonance imaging (MRI) by patients with heart disease. That is the result of a study performed at Charité Universitätsmedizin Berlin and published on February 28, 2007 in PLoS ONE, the international, peer-reviewed, open-access, online publication from the Public Library of Science (PLoS).
Feb 28, 2007 - 12:50:33 PM
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Latest Research
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Radiology
Single-slice MRI is a fast, non-invasive way to measure intra-abdominal fat
According to a new study featured in the March issue of Radiology, single-slice magnetic resonance imaging (MRI) is a fast, non-invasive way to measure intra-abdominal fat, which when excessive, may put children and teenagers at risk for developing heart disease, diabetes and other illnesses.
Feb 28, 2007 - 3:23:04 AM
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Latest Research
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Radiology
Multislice CT speeds the diagnosis of chest pain in the emergency room
Imagine coming to the hospital with crushing chest pain, only to find that emergency room doctors are uncertain whether youre having a heart attack. The electrocardiogram (ECG) is inconclusive and the blood tests that detect heart damage are normal. The only thing to do is wait, hour after hour, as doctors repeat the tests several times and scrutinize the results for diagnostic clues.
Feb 21, 2007 - 8:24:17 AM
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Latest Research
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Radiology
How safe is "boutique ultrasonography"?
Expectant parent' desire to see images of their unborn children has given rise to commercial companies offering keepsake ultrasound scans without medical supervision, often referred to as "boutique ultrasonography."
Feb 5, 2007 - 1:05:37 PM
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Latest Research
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Radiology
SCAI recommends maintenance of high standards while performing PCI without on-site cardiac surgery support
The Society for Cardiovascular Angiography and Interventions (SCAI), a leading organization for interventional cardiologists, today released a document recommending the adoption of stringent quality standards by those who perform percutaneous coronary intervention (PCI) in hospitals not equipped for cardiac surgery.
Feb 5, 2007 - 5:09:54 AM
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Latest Research
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Radiology
Technology can't replace doctors' judgment in reading mammograms
Radiologists should not become too dependent on the use of computer-assisted detection (CAD) technology when reading screening mammograms because the doctors can see lesions that CAD sometimes misses. This is according to a study conducted at Group Health Cooperative, a Seattle based health care system. The research appears in the December issue of the American Journal of Roentgenology.
Dec 4, 2006 - 3:05:28 PM
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Latest Research
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Radiology
Inside the Head of an Ancient Pharaoh
Egyptian radiologists who performed the first-ever computed tomography (CT) evaluation of King Tutankhamun's mummy believe they have solved the mystery of how the ancient pharaoh died. The CT images and results of their study were presented today at the annual meeting of the Radiological Society of North America (RSNA).
Nov 28, 2006 - 6:38:43 PM
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Latest Research
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Radiology
New way of tracking muscle damage from radiation
Magnetic resonance imaging (MRI) could become a valuable tool for predicting the risk of muscle injury during and following radiation therapy, according to investigators at St. Jude Children's Research Hospital.
Nov 7, 2006 - 2:29:00 PM
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Latest Research
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Radiology
Audit shows excellent performance of radiologists in interpreting mammograms
A recent study of medical audit data funded by the National Cancer Institute (NCI) revealed that community mammography screening results surpass performance recommendations across the United States.
Sep 26, 2006 - 4:26:00 PM
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Latest Research
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Radiology
Comparing MDCT and digital radiography in orthopedic patients
Multi-detector computed tomography (MDCT) using high-quality 2D formatting is highly recommended as the primary imaging technique for the evaluation of bone healing, according to a study done by radiologists at the Medical University of Vienna in Vienna, Austria.
Aug 3, 2006 - 5:20:00 PM
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Latest Research
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Radiology
New MRI technique shows emphysema in asymptomatic smokers
A new imaging method has revealed early signs of emphysema in smokers with no external symptoms of the disease, according to a study published in the June issue of Radiology. The study, supported by the National Institutes of Health, details a new magnetic resonance imaging (MRI) technique that appears to be much more sensitive to lung changes than even the current modality of choice, computed tomography (CT).
May 31, 2006 - 5:08:00 PM
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Latest Research
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Radiology
Safety profile for CT colonography (CTC) favorable
The safety profile for CT colonography (CTC) is extremely favorable, particularly for the purposes of screening patients with no symptoms and when distending the colon using an automated carbon dioxide technique, a finding that goes against the higher complication rates for CTC reported by other groups, according to a new study.
May 3, 2006 - 1:15:00 AM
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Latest Research
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Radiology
Modulating tube current to account for body symmetry reduces radiation exposure in CT
By lowering the tube current to account for both the weight and body symmetry of a child, an abdominal CT radiation dose can be reduced by 60% without compromising the image quality, says a new study by researchers from the Children's Hospital of Philadelphia in Pennsylvania.
May 3, 2006 - 1:09:00 AM
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Latest Research
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Radiology
Training on virtual 'patient' improves carotid angiography skills
Cardiologists can learn to perform risky catheter procedures such as carotid angiography on a virtual patient simulator, rather than on real patients, according to a new study in the May 2, 2006, issue of the Journal of the American College of Cardiology. "Virtual reality simulation technology has advanced to the point where we can actually use a virtual environment and have the trainee learn in a very 'patient-safe' way in a virtual patient environment and make mistakes on a virtual patient versus doing it on a real patient," said Christopher U. Cates, M.D., F.A.C.C., F.S.C.A.I. from the Emory University School of Medicine in Atlanta, Georgia. Twenty interventional cardiologists participating in the Emory NeuroAnatomy Carotid Training program underwent an instructional course on carotid angiography and then performed five serial simulated carotid angiograms on the Vascular Interventional System Training (VIST) VR simulator. The cardiologists committed fewer catheter errors, while performing the virtual procedure in less time, and subjecting the virtual patient to less X-ray imaging and smaller injections of contrast agent during the final run compared to the first one.
Apr 28, 2006 - 2:14:00 AM
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Latest Research
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Radiology
Radiologic signs more than double sensitivity of MRIs
Radiologists can make a more accurate preoperative diagnosis of damage to knee cartilage by using four radiologic 'signs', a recent study found. Using the four signs to identify the extent and type of damage to knee cartilage makes interpreting MRIs with higher degrees of accuracy easier for any radiologist, regardless of their level of expertise.
Feb 12, 2006 - 6:04:00 PM
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Latest Research
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Radiology
CT Enteroclysis Has a Superior Diagnostic Value in Crohn's Disease
The diagnostic value of CT enteroclysis is superior to conventional enteroclysis, previously considered the gold standard, as an imaging method for the evaluation of the small bowel in patients with Crohn's disease, a new study shows.
Jan 31, 2006 - 7:38:00 PM
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Latest Research
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Radiology
Characteristic Cardiac Scar Pattern Predicts Risk Of Fatal Arrhythmias
Using magnetic resonance imaging (MRI) scans of the heart wall, researchers at Johns Hopkins have found that people whose muscle wall thickness contained more than 25 percent scar tissue were approximately nine times more likely to test positive for a fast and dangerous heart rhythm known as ventricular arrhythmia.
Nov 2, 2005 - 3:51:00 AM
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Latest Research
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Radiology
Remote Detection Makes NMR Compatible with Microfluidics
A breakthrough in the technology of nuclear magnetic resonance (NMR), one of the most powerful analytic tools known to science, is opening the door to new applications in microfluidic chips, devices for studying super-tiny amounts of fluids. A team of scientists with Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California, Berkeley, has demonstrated a means by which NMR can be made compatible with microfluidic lab-on-a-chip devices. This demonstration holds great promise for biomedical research, the detection of biohazards and toxic chemicals, and other endeavors in which the chemical composition of a fluid must be determined.
Oct 11, 2005 - 12:48:00 AM
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Latest Research
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Radiology
Batch Reading Mammograms Lowers Recall Rates
Batch reading, the process of interpreting screening mammograms during a set-aside block of time in a quiet environment that prevents interruption or distraction, can significantly reduce the number of patients who have to return for additional mammogramsalthough few hospitals use it, say researchers from the University of Wisconsin.
Sep 7, 2005 - 7:45:00 AM
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Latest Research
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Radiology
Fluorescence spectroscopy can detect inflammatory cells in blood vessels
Now, in a study involving laboratory rabbits, a device that stimulates, collects and measures light emissions from body tissues has been able to detect the presence of inflammatory cells that are associated with critical atherosclerotic plaques in humans plaques that are vulnerable to rupture.
Aug 14, 2005 - 2:35:00 PM
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Latest Research
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Radiology
MRI is Better Than SPECT in Assessing Heart Damage in Patients with Hypertrophic Cardiomyopathy
Contrast-enhanced MRI is better than SPECT in detecting heart damage in patients with hypertrophic cardiomyopathy, a disease that can lead to sudden death in young patients.
Aug 6, 2005 - 4:58:00 PM
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Latest Research
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Radiology
Contrast Agent Allows Quicker, More Thorough MRI Screening of Living Liver Donors Before Surgery
A single dose of the contrast agent gadobenate dimeglumine can help liver donors avoid multiple MRI examinations during the screening process, cutting down on time and cost without compromising accuracy, say researchers from the Yonsei University College of Medicine in Seoul, Korea.
Aug 6, 2005 - 11:39:00 AM
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Latest Research
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Radiology
MDCT Arthrography Good for Assessing Hip Dysplasia
MDCT arthrography is an accurate method for assessing cartilage loss in patients with hip dysplasia and may be more reliable than MRI in such instances, says a new study by researchers from Osaka University Medical School in Japan.
Aug 6, 2005 - 11:39:00 AM
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Latest Research
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Radiology
CT Significantly Reduces the Need for Appendectomy
Lowers Negative Appendectomy Rate from 20% to 3% at Urban Hospital
Jun 8, 2005 - 7:49:00 PM
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Latest Research
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Radiology
MDCT Highly Accurate for Diagnosing Coronary Artery Disease in Patients With Zero to Moderate Coronary Calcification
In patients with no or moderate coronary calcification, 16-slice MDCT allows the reliable detection of coronary artery stenosis with high diagnostic accuracy, say researchers from Tuebingen University Hospital in Germany. Coronary artery stenosis is the narrowing of coronary arteries due to the build-up of calcified plaques.
May 4, 2005 - 6:02:00 PM
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Latest Research
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Radiology
Chest X Rays can help Detect Osteoporosis
Undetected osteoporosis in the elderly might be discovered if chest radiographs (x-ray images) that are done for other reasons were examined for fractures of the vertebrae, according to an article in the April 25 issue of the Archives of Internal Medicine, one of the JAMA/Archives journals.
Apr 26, 2005 - 6:44:00 PM
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Latest Research
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Radiology
Newer Imaging Techniques May Lead to Over-Treatment
Newer imaging technologies allow physicians to visualize more of the arteries in the lungs, including detecting small blood clots not previously seen, but seeing more may have little impact on the patients outcome, a new study suggests.
Apr 5, 2005 - 5:47:00 PM
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Latest Research
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Radiology
Optical Coherence Tomography (OCT) may guide therapy designed to prevent heart attacks
A catheter-based imaging technology called optical coherence tomography (OCT) can successfully identify the characteristics of coronary plaques in patients with various cardiac symptoms.
Mar 27, 2005 - 4:24:00 PM
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Latest Research
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Radiology
A New Dyssynchrony Imaging Technique to Aid Cardiologists in the Quantification of Left Ventricular Mechanical Dyssynchrony
The Aplio CVs new Dyssynchrony Imaging technique aids cardiologists in the quantification of left ventricular mechanical dyssynchrony by providing a color-coded display that demonstrates the timing of events within the myocardium of the heart. Early mechanical events are green and severely delayed events are displayed red, allowing clinicians to quickly identify the presence and severity of the patients dyssynchronous events.
Mar 4, 2005 - 12:16:00 PM
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Latest Research
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Radiology
Full body MRI can be used as screening tool for cancer and heart diseases
The use of full-body cardiovascular and tumor MRI to screen for disease in patients who do not have any suspicious symptoms is technically feasible, but for the present, full-body MRI screening should not be performed outside of a research setting due to the uncertainty of whether the benefits outweigh the risks, according to a new study by researchers from the University Hospital of Essen in Germany. For the study, the researchers conducted 298 full-body MRI screenings of healthy patients. The screenings revealed that 21% of the study group exhibited signs of atherosclerotic disease and 12% had peripheral vascular disease. Twelve colon polyps, nine pulmonary lesions, two cerebral infarctions and one myocardial infarction were also discovered. In addition, 29% of the examinations revealed relevant additional findings in nontargeted organs.
Feb 4, 2005 - 7:25:00 PM
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Latest Research
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Radiology
The accuracy of mammographic interpretation
The accuracy of mammographic interpretation can vary widely, but the source of the variability has not been explained. To investigate the relationship between radiologists' characteristics and actual performance, William E. Barlow, Ph.D., of Cancer Research and Biostatistics in Seattle, and colleagues surveyed 124 radiologists and tracked cancer outcomes from the more than 460,000 screening mammograms they interpreted between 1996 and 2001.
Greater volume of mammograms interpreted and more years of experience were not associated with greater accuracy. However, greater volume was associated with higher sensitivity (more true positive results in women who had breast cancer) and lower specificity (more false positive results in women who did not have breast cancer) whereas more experience was associated with lower sensitivity and higher specificity. The authors conclude that increasing volume requirements for radiologists is unlikely to improve the interpretation of mammograms.
Dec 16, 2004 - 7:25:00 PM
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